Fluidized bed reactors aren't new. They are used in many industries. I even had one on my aquarium for ntrification of fish waste. What is new is the use of them to produce biocoal. They did have a pilot plant but I didn't hear how test results went. I assume successful or bonds wouldn't be issued. I did read that getting the right air speed was a little tricky. Can't remember where I read it though.
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